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A core–shell electrode for dynamically and statically stable Li–S battery chemistry

Journal Article · · Energy & Environmental Science
DOI:https://doi.org/10.1039/c6ee01280a· OSTI ID:1430184
 [1];  [2];  [2]
  1. Univ. of Texas, Austin, TX (United States). Materials Science and Engineering Program & Texas Materials Institute; University of Texas at Austin
  2. Univ. of Texas, Austin, TX (United States). Materials Science and Engineering Program & Texas Materials Institute
Sulfur is an appealing cathode material for establishing advanced lithium batteries as it offers a high theoretical capacity of 1675 mA h g-1 at low material and operating costs. However, the lithium–sulfur (Li–S) electrochemical cells face several formidable challenges arising from both the materials chemistry (e.g., low electrochemical utilization of sulfur and severe polysulfide diffusion) and battery chemistry (e.g., dynamic and static instability and low sulfur loadings). Here in this study, we present the design of a core–shell cathode with a pure sulfur core shielded within a conductive shell-shaped electrode. The new electrode configuration allows Li–S cells to load with a high amount of sulfur (sulfur loadings of up to 30 mg cm-2 and sulfur content approaching 70 wt%). The core–shell cathodes demonstrate a superior dynamic and static electrochemical stability in Li–S cells. The high-loading cathodes exhibit (i) a high sulfur utilization of up to 97% at C/20–C/2 rates and (ii) a low self-discharge during long-term cell storage for a three-month rest period and at different cell-storage conditions. Finally, a polysulfide-trap cell configuration is designed to evidence the eliminations of polysulfide diffusion and to investigate the relationship between the electrode configuration and electrochemical characteristics. Finally, the comprehensive analytical results based on the high-loading cathodes suggest that (i) the core–shell cathode is a promising solution for designing highly reversible Li–S cells and (ii) the polysulfide-trap cell configuration is a viable approach to qualitatively evaluating the presence or absence of polysulfide diffusion.
Research Organization:
Univ. of Texas, Austin, TX (United States)
Sponsoring Organization:
USDOE Office of Energy Efficiency and Renewable Energy (EERE)
Grant/Contract Number:
EE0007218
OSTI ID:
1430184
Alternate ID(s):
OSTI ID: 1487236
Journal Information:
Energy & Environmental Science, Journal Name: Energy & Environmental Science Journal Issue: 10 Vol. 9; ISSN EESNBY; ISSN 1754-5692
Publisher:
Royal Society of ChemistryCopyright Statement
Country of Publication:
United States
Language:
English

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Cited By (42)

Rational Design of MXene/1T-2H MoS 2 -C Nanohybrids for High-Performance Lithium-Sulfur Batteries journal March 2018
Creating Effective Nanoreactors on Carbon Nanotubes with Mechanochemical Treatments for High-Areal-Capacity Sulfur Cathodes and Lithium Anodes journal June 2018
Progress on the Critical Parameters for Lithium-Sulfur Batteries to be Practically Viable journal May 2018
Phenyl Selenosulfides as Cathode Materials for Rechargeable Lithium Batteries journal June 2018
More Reliable Lithium-Sulfur Batteries: Status, Solutions and Prospects journal April 2017
Yolk-Shelled C@Fe 3 O 4 Nanoboxes as Efficient Sulfur Hosts for High-Performance Lithium-Sulfur Batteries journal July 2017
Rational Design of Statically and Dynamically Stable Lithium-Sulfur Batteries with High Sulfur Loading and Low Electrolyte/Sulfur Ratio journal December 2017
Long-Life Lithium-Sulfur Batteries with a Bifunctional Cathode Substrate Configured with Boron Carbide Nanowires journal August 2018
A Facile, Low-Cost Hot-Pressing Process for Fabricating Lithium-Sulfur Cells with Stable Dynamic and Static Electrochemistry journal October 2018
Current Status and Future Prospects of Metal–Sulfur Batteries journal May 2019
Simultaneous Suppression of the Dendrite Formation and Shuttle Effect in a Lithium-Sulfur Battery by Bilateral Solid Electrolyte Interface journal July 2018
Review on High-Loading and High-Energy Lithium-Sulfur Batteries journal May 2017
A High-Volumetric-Capacity Cathode Based on Interconnected Close-Packed N-Doped Porous Carbon Nanospheres for Long-Life Lithium-Sulfur Batteries journal August 2017
High-Performance and Low-Temperature Lithium-Sulfur Batteries: Synergism of Thermodynamic and Kinetic Regulation journal March 2018
In Situ Assembly of 2D Conductive Vanadium Disulfide with Graphene as a High-Sulfur-Loading Host for Lithium-Sulfur Batteries journal April 2018
Nitrogen-Doped Graphene-Supported Mixed Transition-Metal Oxide Porous Particles to Confine Polysulfides for Lithium-Sulfur Batteries journal May 2018
Highly Stable Lithium-Sulfur Batteries Based on Laponite Nanosheet-Coated Celgard Separators journal July 2018
Solid-State Lithium/Selenium-Sulfur Chemistry Enabled via a Robust Solid-Electrolyte Interphase journal November 2018
Interfacial Charge Field in Hierarchical Yolk–Shell Nanocapsule Enables Efficient Immobilization and Catalysis of Polysulfides Conversion journal July 2019
Polysulfide Confinement and Highly Efficient Conversion on Hierarchical Mesoporous Carbon Nanosheets for Li–S Batteries journal September 2019
Stabilizing the Performance of High-Capacity Sulfur Composite Electrodes by a New Gel Polymer Electrolyte Configuration journal August 2017
High‐Sulfur‐Content Graphene‐Based Composite through Ethanol Evaporation for High‐Energy Lithium‐Sulfur Battery journal March 2020
Sulfur Loaded by Nanometric Tin as a New Electrode for High‐Performance Lithium/Sulfur Batteries journal May 2019
Functional Differentiation of Three Pores for Effective Sulfur Confinement in Li-S Battery journal January 2018
Greatly Improved Conductivity of Double-Chain Polymer Network Binder for High Sulfur Loading Lithium-Sulfur Batteries with a Low Electrolyte/Sulfur Ratio journal July 2018
Nanostructured Host Materials for Trapping Sulfur in Rechargeable Li-S Batteries: Structure Design and Interfacial Chemistry journal November 2017
Layered Electrodes Based on 3D Hierarchical Porous Carbon and Conducting Polymers for High‐Performance Lithium‐Sulfur Batteries journal January 2019
Sulfur nanoparticles encapsulated in reduced graphene oxide nanotubes for flexible lithium-sulfur batteries journal February 2018
Structural Design of Lithium–Sulfur Batteries: From Fundamental Research to Practical Application journal June 2018
Chemisorption of polysulfides through redox reactions with organic molecules for lithium–sulfur batteries journal February 2018
Exploiting a robust biopolymer network binder for an ultrahigh-areal-capacity Li–S battery journal January 2017
Carbon-coated core–shell Li 2 S@C nanocomposites as high performance cathode materials for lithium–sulfur batteries journal January 2017
Recent innovative configurations in high-energy lithium–sulfur batteries journal January 2017
Harnessing the unique properties of 2D materials for advanced lithium–sulfur batteries journal January 2019
A three-dimensional self-assembled SnS 2 -nano-dots@graphene hybrid aerogel as an efficient polysulfide reservoir for high-performance lithium–sulfur batteries journal January 2018
Electrostatic trapping of polysulfides enabled by imidazolium-based ionic polymers for high-energy-density lithium–sulfur batteries journal January 2018
A core–shell cathode substrate for developing high-loading, high-performance lithium–sulfur batteries journal January 2018
Current-density dependence of Li 2 S/Li 2 S 2 growth in lithium–sulfur batteries journal January 2019
MOF-derived nitrogen-doped core–shell hierarchical porous carbon confining selenium for advanced lithium–selenium batteries journal January 2019
Self-Discharge Behavior of Lithium-Sulfur Batteries at Different Electrolyte/Sulfur Ratios journal January 2019
Flow Battery Molecular Reactant Stability Determined by Symmetric Cell Cycling Methods journal January 2018
Low-Temperature Conductivity Study of Multiorganic Solvent Electrolyte for Lithium-Sulfur Rechargeable Battery Application journal November 2019

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